Question: Which artistic genre has its introduction in 1968-1-1 by Alice Cooper?
Paraphrase: Which inventive style has its introduction in 1968-1-1 by means of Alice Cooper?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q16821277 wdt:P136 ?answer . ?answer wdt:P571 ?x FILTER(contains(YEAR(?x),'1968'))}
Answer: heavy metal